Kusinthasintha ndi Zosinthira
Inductance ndi transformers ndi mfundo ziwiri zofunika kwambiri padziko lonse lapansi za magetsi, zomwe zimayang'anira mbali zonse za momwe mphamvu zamagetsi zimapangira, zimatumizira, komanso zimagwiritsidwa ntchito. Kumvetsetsa bwino mfundo ziwirizi ndikofunikira kwa aliyense amene ali ndi chidwi ndi uinjiniya wamagetsi ndi momwe amagwiritsidwira ntchito tsiku ndi tsiku.
Kuyendetsa
Kupindika kwa mphamvu ndi mphamvu ya gawo lamagetsi, monga waya kapena solenoid, kusunga mphamvu mu mphamvu ya maginito pamene mphamvu yamagetsi ikuyenda mkati mwake. Chigawo cha SI choyezera kupindika kwa mphamvu ndi Henry (H). Kupindika kwa mphamvu nthawi zambiri kumawonetsedwa ndi chizindikiro 'L' ndipo kumatha kuwerengedwa pogwiritsa ntchito equation:
\[ L = \frac{N\Phi}{I} \]
Pamene \(N\) ndi chiwerengero cha ma turns, \(\Phi\) ndi magnetic flux, ndipo \(I\) ndi current.
Kwenikweni, chotulutsira mpweya chimakhala ndi waya wozungulira, womwe nthawi zambiri umapangidwa ndi mkuwa, wopindika kukhala mawonekedwe enaake, monga solenoid kapena toroid. Mphamvu yamagetsi ikadutsa mu wayawu, mphamvu yamagetsi imapangidwa mozungulira wayawo. Kusintha kwa mphamvu yamagetsi kumabweretsa kusintha kwa mphamvu yamagetsi iyi, malinga ndi lamulo la Faraday la Kuyambitsa Magetsi. Izi zimayambitsa kuyambitsidwa kwa magetsi, komwe kumapanga mphamvu yamagetsi (EMF) yomwe imatsutsana ndi kusintha kwa mphamvu yamagetsi.
Mfundo imeneyi imawonekera kwambiri pogwiritsa ntchito ma inductors m'ma electronic circuits. Ma inductors angagwiritsidwe ntchito kusefa ma frequency ena, kuwongolera kugwedezeka kwa magetsi m'ma LC circuits, kapena ngati zinthu zosungira mphamvu mu ma power converters. Ntchito imodzi yeniyeni ndi choke, yomwe imagwiritsidwa ntchito kutseka AC pamene ikulola DC kudutsa.
Komabe, pamene ma inductor angapo ayikidwa pafupi, nkhani imodzi yofunika kuiganizira ndi kulumikizana kwa maginito pakati pawo, komwe kungayambitse kusinthasintha kwa magetsi. Apa ndi pomwe ma transformer amakhala ofunikira kwambiri.
thiransifoma
Transformer ndi chipangizo chomwe chimasintha magetsi kuchokera pamlingo wina kupita ku wina pogwiritsa ntchito mfundo ya induction yamagetsi. Transformer imakhala ndi ma coil awiri kapena angapo ozungulira pakati pa chitsulo kapena zinthu zina za ferromagnetic. Coil yoyamba imalumikizidwa ku gwero lamagetsi, ndipo coil yachiwiri imalumikizidwa ku katundu. Ma transformer amatha kuwonjezera (kukweza) kapena kuchepetsa (kutsitsa) magetsi ngati pakufunika.
Mfundo yogwirira ntchito ya transformer imachokera ku Lamulo la Faraday la Kulowetsa Magetsi ndi Lamulo la Lenz. Pamene mphamvu ya AC ikuyenda kudzera mu coil yoyamba, mphamvu ya maginito yosintha imapangidwa mozungulira. Mphamvu ya maginito yosintha iyi imadutsa pakati pa ferromagnetic kupita ku coil yachiwiri. Malinga ndi Lamulo la Faraday, mphamvu ya maginito yosintha idzayambitsa EMF mu coil yachiwiri. Kukula kwa mphamvu yamagetsi iyi kumadalira kuchuluka kwa ma turn mu coil yachiwiri poyerekeza ndi coil yoyamba, malinga ndi equation yotsatirayi:
\[ V_s = \frac{N_s}{N_p} \times V_p \]
Kumene:
– \(V_s\) ndi mphamvu yamagetsi kudutsa coil yachiwiri.
– \(V_p\) ndi mphamvu yamagetsi kudutsa coil yoyamba.
– \(N_s\) ndi chiwerengero cha ma turn mu coil yachiwiri.
– \(N_p\) ndi chiwerengero cha ma turn mu coil yoyamba.
Udindo wa Transformers mu Machitidwe a Mphamvu Zamagetsi
Ma transformer amagwira ntchito yofunika kwambiri pamagetsi apadziko lonse lapansi. Chimodzi mwa ubwino waukulu wogwiritsa ntchito AC ndikuti magetsi amatha kusinthidwa mosavuta pogwiritsa ntchito transformer. Mwachitsanzo, magetsi opangidwa ndi mafakitale amagetsi nthawi zambiri amakhala ndi magetsi ochepa, koma amasinthidwa kukhala magetsi okwera kwambiri kuti apereke mphamvu patali. Njirayi imachepetsa kutayika kwa magetsi komwe kumachitika chifukwa cha kukana kwa zingwe.
Njira yogawa mphamvu yogwira ntchito bwino komanso yotsika mtengo imeneyi siikanatheka popanda ma transformer, omwe asintha kwambiri lingaliro la kutumiza magetsi. Pa malo ogawa magetsi, ma transformer amafunikanso kuti achepetse mphamvu yamagetsi kufika pamlingo woyenera kugwiritsidwa ntchito m'nyumba ndi m'mafakitale.
Kapangidwe ka Transformer
Kapangidwe ka transformer sikudalira kuchuluka kwa ma turns okha komanso zinthu zapakati komanso malo ozungulira. Zinthu zapakati ziyenera kukhala ndi permeability yapamwamba kuti ziyendetse bwino mphamvu ya maginito, nthawi zambiri pogwiritsa ntchito silicon steel kapena ferrite. Izi zimachepetsa hysteresis ndi kutayika kwa eddy current mu transformer.
Kuphatikiza apo, ma core configurations amatha kusiyana, monga C, E, kapena toroidal cores. Kusankha kumeneku kumadalira momwe zinthu zilili komanso momwe zimagwiritsidwira ntchito. Mwachitsanzo, ma toroidal transformers amapereka mphamvu zambiri komanso mphamvu yochepa yotulutsa madzi koma nthawi zambiri amakhala okwera mtengo kupanga.
Kugwiritsa Ntchito Transformer mu Moyo Watsiku ndi Tsiku
Ma transformer samangogwira ntchito pamagetsi okha. Kuchuluka kwa mapulogalamu omwe amagwiritsidwa ntchito tsiku ndi tsiku kumadalira mphamvu za ma inductor ndi ma transformer. Mafoni am'manja, ma TV, ndi ma adapter onse amagwiritsa ntchito ma mini transformer.
Mu gawo la kulumikizana, ma transformer amagwiritsidwa ntchito mu ma RF circuits ndi impedance coupling.
Chinanso chomwe chikufunika ndi kugwiritsa ntchito mankhwala, mwachitsanzo, makina a MRI amagwiritsa ntchito ma transformer apadera kuti apange mphamvu zamaginito zofunika pojambula thupi la munthu.
Mapeto
Kulowetsa mphamvu ndi ma transformer ndi mfundo ziwiri zofunika kwambiri paukadaulo wamagetsi. Kulowetsa mphamvu kumagwira ntchito yofunika kwambiri pakusunga mphamvu ndi kuwongolera mphamvu, pomwe ma transformer amalola kusintha ndi kuyang'anira magetsi ndi magetsi pazinthu zosiyanasiyana. Ndi kumvetsetsa bwino ndi kugwiritsa ntchito, mfundo ziwirizi zimathandiza kuti magetsi azigwira ntchito bwino, kugawa mphamvu moyenera, komanso kupanga zatsopano m'magawo osiyanasiyana aukadaulo. Popanda iwo, kupita patsogolo kwamakono muukadaulo wamagetsi sikungakhale pamlingo womwe ulipo pano.
